package com.mrt.chatgpt.data.config;

import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableAsync;

import java.util.concurrent.*;

/**
 * @Author 86135
 * @Date 2024/3/13 19:25
 * @Description
 * @Version 1.0
 * @快捷键 getterANDsetter ALT+Insert
 * @快捷键 Ctrl+/或者Ctrl+Shift+/都可以快速注释
 * @快捷键 Ctrl+D 快速复制代码
 * @“ctrl+r”快捷键,用于当前文件内容替换,指的是在当前打开的文件中替换匹配的字符,只操作一个文件;
 * @ALT+鼠标左键 整列编辑
 * @快捷键提示 ALT+Enter
 * @快捷键 快速写注释：在方法函数上方输入/** 然后回车
 * @快捷键 Ctrl+O，选择重写的方法
 * @快捷键 ALT+INSERT
 */
@Slf4j
@EnableAsync
@Configuration
@EnableConfigurationProperties(ThreadPoolConfigProperties.class)
public class TheadPoolConfig {

    @Bean
    @ConditionalOnMissingBean(ThreadPoolExecutor.class)
    public ThreadPoolExecutor threadPoolExecutor(ThreadPoolConfigProperties properties){
        //实例化策略
        RejectedExecutionHandler handler;
        switch (properties.getPolicy()){
            case "AbortPolicy":
                handler = new ThreadPoolExecutor.AbortPolicy();
                break;
            case "DiscardPolicy":
                handler = new ThreadPoolExecutor.DiscardPolicy();
                break;
            case "DiscardOldestPolicy":
                handler = new ThreadPoolExecutor.DiscardOldestPolicy();
                break;
            case "CallerRunsPolicy":
                handler = new ThreadPoolExecutor.CallerRunsPolicy();
                break;
            default:
                handler = new ThreadPoolExecutor.AbortPolicy();
                break;
        }
        //创建线程池
        return new ThreadPoolExecutor(
                properties.getCorePoolSize(),
                properties.getMaxPoolSize(),
                properties.getKeepAliveTime(),
                TimeUnit.SECONDS,
                new LinkedBlockingDeque<>(properties.getBlockQueueSize()),
                Executors.defaultThreadFactory(),
                handler);
    }

}
